are ads that appear across the top of a Web page, which are then linked
to the advertiser's site. Banners are the most common form of online
advertising. However, clickthrough rates have plunged to a low 0.39%
average. Most banners are GIF images, but Flash banners are becoming
more popular. There are eight standard sizes.
are smaller than a banner, square in shape and usually placed on either
side of the site.
ads are links to advertisers' sites that are placed within
the main body text of a Web page.
are ads that appear in the browser window while another Web page is
loading. They are the most common form of interruption marketing. Interstitials
have a higher than average clickthrough rate.